/*    $OpenBSD: if_iwivar.h,v 1.26 2016/09/05 08:17:48 tedu Exp $    */

/*-
 * Copyright (c) 2004-2006
 *      Damien Bergamini <damien.bergamini@free.fr>. All rights reserved.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

struct iwi_rx_radiotap_header {
    struct ieee80211_radiotap_header wr_ihdr;
    uint8_t        wr_flags;
    uint8_t        wr_rate;
    uint16_t    wr_chan_freq;
    uint16_t    wr_chan_flags;
    uint8_t        wr_antsignal;
    uint8_t        wr_antenna;
} __packed;

#define IWI_RX_RADIOTAP_PRESENT                        \
    ((1 << IEEE80211_RADIOTAP_FLAGS) |                \
     (1 << IEEE80211_RADIOTAP_RATE) |                \
     (1 << IEEE80211_RADIOTAP_CHANNEL) |                \
     (1 << IEEE80211_RADIOTAP_DB_ANTSIGNAL) |            \
     (1 << IEEE80211_RADIOTAP_ANTENNA))

struct iwi_tx_radiotap_header {
    struct ieee80211_radiotap_header wt_ihdr;
    uint8_t        wt_flags;
    uint16_t    wt_chan_freq;
    uint16_t    wt_chan_flags;
} __packed;

#define IWI_TX_RADIOTAP_PRESENT                        \
    ((1 << IEEE80211_RADIOTAP_FLAGS) |                \
     (1 << IEEE80211_RADIOTAP_CHANNEL))


struct iwi_cmd_ring {
    bus_dmamap_t        map;
    bus_dma_segment_t    seg;
    struct iwi_cmd_desc    *desc;
    int            queued;
    int            cur;
    int            next;
};

struct iwi_tx_data {
    bus_dmamap_t        map;
    mbuf_t              m;
    struct ieee80211_node    *ni;
};

struct iwi_tx_ring {
    bus_dmamap_t        map;
    bus_dma_segment_t    seg;
    bus_size_t        csr_ridx;
    bus_size_t        csr_widx;
    struct iwi_tx_desc    *desc;
    struct iwi_tx_data    data[IWI_TX_RING_COUNT];
    int            queued;
    int            cur;
    int            next;
};

struct iwi_rx_data {
    bus_dmamap_t        map;
    mbuf_t              m;
    uint32_t        reg;
};

struct iwi_rx_ring {
    struct iwi_rx_data    data[IWI_RX_RING_COUNT];
    int            cur;
};

struct iwi_softc {
    struct device        sc_dev;

    struct ieee80211com    sc_ic;
    int            (*sc_newstate)(struct ieee80211com *,
                    enum ieee80211_state, int);

    struct rwlock        sc_rwlock;

    bus_dma_tag_t        sc_dmat;

    struct iwi_cmd_ring    cmdq;
    struct iwi_tx_ring    txq[4];
    struct iwi_rx_ring    rxq;

#define IWI_MAX_NODE    32
    uint8_t            sta[IWI_MAX_NODE][IEEE80211_ADDR_LEN];
    uint8_t            nsta;

    bus_space_tag_t        sc_st;
    bus_space_handle_t    sc_sh;
    void             *sc_ih;
    pci_chipset_tag_t    sc_pct;
    pcitag_t        sc_pcitag;
    bus_size_t        sc_sz;

    struct task        init_task;

    int            sc_tx_timer;

#if NBPFILTER > 0
    caddr_t            sc_drvbpf;

    union {
        struct iwi_rx_radiotap_header th;
        uint8_t    pad[64];
    } sc_rxtapu;
#define sc_rxtap    sc_rxtapu.th
    int            sc_rxtap_len;

    union {
        struct iwi_tx_radiotap_header th;
        uint8_t    pad[64];
    } sc_txtapu;
#define sc_txtap    sc_txtapu.th
    int            sc_txtap_len;
#endif
};
